22121020101200 has 60 divisors (see below), whose sum is σ = 53146260618048. Its totient is φ = 8848323158400.

The previous prime is 22121020101151. The next prime is 22121020101209. The reversal of 22121020101200 is 210102012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121020101209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56823215 + ... + 57211185.

Almost surely, 2^{22121020101200} is an apocalyptic number.

22121020101200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121020101200 is an abundant number, since it is smaller than the sum of its proper divisors (31025240516848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121020101200 is a wasteful number, since it uses less digits than its factorization.

22121020101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530532 (or 530521 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22121020101200 its reverse (210102012122), we get a palindrome (22331122113322).

The spelling of 22121020101200 in words is "twenty-two trillion, one hundred twenty-one billion, twenty million, one hundred one thousand, two hundred".